How much does it cost to fix boiler error code Float switch?

Typical repair cost for the boiler Float switch fault is £120-250 including labour.

Float switch High

Boiler Fault Code Float switch

Also written as FLOATSWITCH — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Float switch appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected that the water levels inside the system are incorrect, or the sensor that monitors the water level is faulty. (As reported on Ideal Concord CXC 48 116)

Pick your boiler brand for the Float switch fix

Ideal Float switch 2 models

Source

Information for the Float switch fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026